solid metal rotor blade

solid-propellant rocket (solid-fuel rocket)

blade tip light / main-rotor blade tip light

main-rotor blade tip light blade tip light

Complementary metal–oxide–semiconductor (CMOS) / Complementary-symmetry/metal-oxide semiconductor

metal-to-metal contact points

lateral dual rotor system / side-by-side rotor helicopter

main-rotor head / main-rotor hub

main-rotor hub / main-rotor head

tail rotor blade

five-blade main rotor

main-rotor blade

main-rotor blade durability

tail rotor blade angle

tail rotor blade casing

three-blade tail rotor

rotor blade

blade flat; saber flat; sword flat, flat of the blade / sword

blade de-icers / blade heating elements

blade heating elements / blade de-icers

blade horn / blade lever

solid fuel

solid masonry structure

solid propellant

solid-propellant charge

solid-propellant rocket engine / motor

two-stage solid-propellant ballistic vehicle

Firedragon (solid fuel)

solid rocket motor

solid retention time

all-solid launch aeroballistic

unguided solid propellant rocket

strap-on solid motors